rcolor.java

j2me 上面flash播放器。非常值得研究。就是版本只到2.0

package org.jflashme;

/*  This library is free software; you can redistribute it and/or modify it
 *  under the terms of the GNU Lesser General Public License, version 2, as
 *  published by the Free Software Foundation.
 *
 *  This library is distributed in the hope that it will be useful, but
 *  WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 *  Lesser General Public License (the accompanying file named LGPL.txt)
 *  for more details.
 */

final class RColor {
  RColor nextActive;
  int order;
  int fillType;
  int visible;
  boolean onActiveList;
  byte index;
  long wideColor;
  int color;
  Matrix ginvMat;
  int gcolorRamp[];
  Matrix bmInvMat;
  Bitmap bitmap;
  ColorTransform cx;
  boolean cacheValid;
  boolean bmSmooth;
  boolean bmFast;
  int bmDx;
  int bmDy;

  RColor(DisplayList displaylist, int i) {
    fillType = 0;
    color = i;
    if (displaylist.indexedColor)
      index = (byte) displaylist.RGBToIndex(color);
    int j;
    wideColor = ( (j = color) & 0xff000000L) << 24 | (j & 0xff0000L) << 16 |
        (j & 65280L) << 8 | j & 255L;
  }

  RColor(DisplayList displaylist, int i, int j, int ai[], int ai1[],
         Matrix matrix, Matrix matrix1) {
    fillType = i;
    Matrix matrix2 = new Matrix(matrix1);
    if (displaylist.antialias) {
      matrix2.a /= 4;
      matrix2.d /= 4;
      matrix2.b /= 4;
      matrix2.c /= 4;
      matrix2.tx /= 4;
      matrix2.ty /= 4;
    }
    Matrix matrix3 = new Matrix(matrix);
    matrix2.tx <<= 8;
    matrix2.ty <<= 8;
    matrix3.tx <<= 8;
    matrix3.ty <<= 8;
    ginvMat = Matrix.concat(matrix3, matrix2).invert();
    gcolorRamp = new int[257];
    int i1 = 0;
    int j1 = ai1[0];
    int l;
    int k = l = ai[0];
    int j2 = 1;
    for (int k2 = 0; k2 <= 256; k2++) {
      if (k2 > j1) {
        i1 = j1;
        k = l;
        if (j2 < j) {
          j1 = ai1[j2];
          l = ai[j2];
          j2++;
        }
        else {
          j1 = 256;
        }
      }
      int k1 = (j1 - k2) / 8;
      int l1 = (k2 - i1) / 8;
      int i2 = k1 + l1;
      if (i2 > 0) {
        int l2 = ( (k >> 16 & 0xff) * k1 + (l >> 16 & 0xff) * l1) / i2;
        int i3 = ( (k >> 8 & 0xff) * k1 + (l >> 8 & 0xff) * l1) / i2;
        int j3 = ( (k & 0xff) * k1 + (l & 0xff) * l1) / i2;
        gcolorRamp[k2] = 0xff000000 | l2 << 16 | i3 << 8 | j3;
      }
      else {
        gcolorRamp[k2] = k;
      }
    }

  }

  void RecalcSolid(DisplayList displaylist, int i) {
    fillType = 0;
    color = i;
    if (displaylist.indexedColor)
      index = (byte) displaylist.RGBToIndex(color);
    int j;
    wideColor = ( (j = color) & 0xff000000L) << 24 | (j & 0xff0000L) << 16 |
        (j & 65280L) << 8 | j & 255L;
  }

}